@charset "utf-8";

@font-face {
    font-family: "Pretendard Variable";
    font-weight: 100 900;
    font-style: normal;
    font-display: swap;
    src: url("/font/PretendardVariable.woff2") format("woff2-variations");
}

/* 2025-08-22 수정 시작 */
body,
html {
    -webkit-text-size-adjust: none;
}
footer {
    margin-top: 0;
}

/* contents_inner */
.contents_inner {
    position: relative;
}
.contents_inner * {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* section */
.section {
    position: relative;
    -webkit-text-size-adjust: none;
}

/* pageDone */
.pageDone {
    position: absolute;
    right: 0;
    top: 13%;
    z-index: 1;
    width: 30%;
}

/* PC버전 보기 버튼 */
.pc-more_btn {
    padding: 1.3rem 1rem;
    background-color: #fff;
    text-align: center;
}
.pc-more_btn a {
    display: block;
    padding: 1rem 0;
    font-weight: bold;
    background: #f5f5f5;
}
.btn_box1 {
    overflow: hidden;
    display: inline-block;
    background-color: #fff;
    min-width: 6.1rem;
    padding: 0.5rem 0.8rem 0.4rem;
    border: 0.1rem solid #696e7a;
    color: #3f3f3f;
    text-align: center;
    vertical-align: middle;
}

.area_evt_intro *,
.area_evt * {
    font-family: "Pretendard Variable", Pretendard;
}

/* area_evt_intro */
.topBg {
    position: relative;
    background-color: #812cf3;
}
.topBg .topBg__banner {
    display: block;
}
/* .topBg .topBg__banner:focus-visible {
  outline: 1px dotted #000;
  outline: 1px auto -webkit-focus-ring-color;
} */
.topBg .img_intro {
    max-width: 100%;
}
.topBg .group_gravity .link_intro {
    display: block;
    width: 84.8684%;
    margin: 48px auto 0;
    margin: 6.316vw auto 0;
}

/* .topBg .group_gravity .link_intro:focus-visible {
  outline: 1px dotted #000;
  outline: 1px auto -webkit-focus-ring-color;
} */
.topBg .txt_comm {
    position: absolute;
    top: 37.1196%;
    right: 0;
    left: 0;
    z-index: 1;
    font-weight: 700;
    font-size: 32px;
    font-size: 4.211vw;
    line-height: 1.3437;
    color: #fff;
    letter-spacing: -1.25px;
    letter-spacing: -0.164vw;
    text-align: center;
}

.topBg .group_gravity {
    position: absolute;
    right: 0;
    bottom: 5.3414%;
    left: 0;
    z-index: 1;
}

.topBg .list_period {
    margin-left: 19.2105%;
    font-size: 0;
}
.topBg .list_period dt {
    display: inline-block;
    width: 154px;
    width: 20.263vw;
    padding: 2px 16px;
    padding: 0.263vw 2.105vw;
    border-radius: 22px;
    border-radius: 2.895vw;
    border: 1px solid #fff;
    box-sizing: border-box;
    font-weight: 700;
    font-size: 26px;
    font-size: 3.421vw;
    color: #fff;
    text-align: center;
    vertical-align: middle;
    letter-spacing: -0.95px;
    letter-spacing: -0.125vw;
}
.topBg .list_period dt + dd {
    margin-left: 14px;
    margin-left: 1.842vw;
}
.topBg .list_period dd {
    display: inline-block;
    box-sizing: border-box;
    font-weight: 700;
    font-size: 26px;
    font-size: 3.421vw;
    color: #fff;
    vertical-align: middle;
}
.topBg .list_period dd + dt {
    margin-left: 54px;
    margin-left: 7.105vw;
}
.topBg .list_period + .list_period {
    margin-top: 17px;
    margin-top: 2.237vw;
}

/* area_evt */
.cont1Bg {
    padding: 9.0789% 0 9.6052% 0;
    background-color: #00f0b0;
}
.cont1Bg .tit_evt1 {
    width: 74.2105%;
    margin: 0 auto;
}
.cont1Bg .footNote {
    margin-top: 7.5%;
    font-weight: 500;
    font-size: 24px;
    font-size: 3.158vw;
    color: #3c434b;
    text-align: center;
    letter-spacing: -1.45px;
    letter-spacing: -0.191vw;
}
.cont1Bg .randomBox {
    position: relative;
}
/* .cont1Bg .randomBox__bubble {} */
.cont1Bg .randomBox__btnArea {
    z-index: 1;
}
/* .cont1Bg .randomBox__btnArea > a {} */
.cont1Bg .randomBox__click {
    display: block;
    width: 53.9473%;
    margin: 6.3157% auto 0;
}
/* .cont1Bg .randomBox__click:focus-visible {
  outline: 1px dotted #000;
  outline: 1px auto -webkit-focus-ring-color;
} */
.cont1Bg .randomBox__click + .randomBox__click--done {
    margin-top: 0;
}
.cont1Bg .randomBox__click--done {
    cursor: default;
    pointer-events: none;
}
/* .cont1Bg .randomBox__click + .randomBox__history {} */
.cont1Bg .randomBox__history {
    display: block;
    width: 188px;
    width: 24.7368%;
    margin: 30px auto 0;
    margin-top: 3.9473%;
}
/* .cont1Bg .randomBox__history:focus-visible {
  outline: 1px dotted #000;
  outline: 1px auto -webkit-focus-ring-color;
} */
/* .cont1Bg .randomBox__img {} */
/* .cont1Bg .randomBox__img.active {} */

/* area_evt */
.cont2Bg {
    position: relative;
    padding: 60px 0 80px;
    padding: 7.895vw 0 10.526vw;
    background-color: #ffcd00;
}

.cont2Bg .tit_evt2 {
    width: 59.0789%;
    margin: 0 auto;
}
.cont2Bg .pageDone {
    top: 2.684%;
    right: 4.0789%;
    width: 28.289vw;
}
.cont2Bg .box_prize {
    margin: 39px 0 0 146px;
    margin: 5.132vw 0 0 19.211vw;
}

.cont2Bg .inputArea__click {
    display: block;
    width: 410px;
    width: 53.9473%;
    margin: 6.3157% auto 0;
}
/* .cont2Bg .inputArea__click:focus-visible {
  outline: 1px dotted #000;
  outline: 1px auto -webkit-focus-ring-color;
} */
.cont2Bg .inputArea__click--done {
    cursor: default;
    pointer-events: none;
}
.cont2Bg .list_period {
    text-align: left;
}
.cont2Bg .list_period:after {
    display: block;
    clear: both;
    content: "";
}
.cont2Bg .list_period dt {
    float: left;
    width: 125px;
    width: 16.447vw;
    font-weight: 700;
    font-size: 24px;
    font-size: 3.158vw;
    line-height: 1;
    color: #4b119b;
    letter-spacing: -1.45px;
    letter-spacing: -0.191vw;
}
.cont2Bg .list_period dd {
    overflow: hidden;
    display: block;
    font-weight: 400;
    font-size: 24px;
    font-size: 3.158vw;
    line-height: 1;
    color: #222;
    letter-spacing: -1.25px;
    letter-spacing: -0.164vw;
}
.cont2Bg .list_period .item_l {
    margin-top: 6px;
    margin-top: 0.789vw;
    font-weight: 400;
    font-size: 24px;
    font-size: 3.158vw;
    line-height: 1;
    color: #222;
    letter-spacing: -1.05px;
    letter-spacing: -0.138vw;
}
.cont2Bg .list_period .item_l:first-child {
    margin-top: 0;
}
.cont2Bg .list_period + .list_period {
    margin-top: 22px;
    margin-top: 2.895vw;
}

.cont2Bg .group_caution {
    margin-top: 49px;
    margin-top: 6.447vw;
    padding: 0 40px;
    padding: 0 5.2631%;
}
.cont2Bg .group_caution .tit_caution {
    display: block;
    padding: 5.5px 0;
    padding: 0.724vw 0;
    background-color: #ff9600;
    text-align: center;
}
.cont2Bg .group_caution .tit_caution .img_caution {
    display: inline-block;
    width: 5.921vw;
    /* max-width: 100%; */
    vertical-align: middle;
}
.cont2Bg .group_caution .tit_caution .txt_l {
    display: inline-block;
    font-weight: 700;
    font-size: 24px;
    font-size: 3.158vw;
    color: #fff;
    vertical-align: middle;
}

/* ico_num
---------- ---------- ---------- ---------- ---------- */
[class^="ico_num"] {
    display: inline-block;
    width: 17px;
    width: 2.237vw;
    height: 16px;
    height: 2.105vw;
    background-position: 0 0;
    background-repeat: no-repeat;
    background-size: 100% auto;
    vertical-align: middle;
}
.ico_num_1 {
    background-image: url(https://s3.unistudy.co.kr/images/mobile/event/2025/joinEvent_2509/ico_num_1.png);
}
.ico_num_2 {
    background-image: url(https://s3.unistudy.co.kr/images/mobile/event/2025/joinEvent_2509/ico_num_2.png);
}

/* list_caution */
.group_caution .list_caution {
    position: relative;
    border-top: 1px solid #ffd00e;
    background-color: #fff5cc;
}
.group_caution .list_caution:first-child {
    border-top: 0 none;
}
.group_caution .list_caution dt {
    display: flex;
    justify-content: center;
    align-items: center;
    position: absolute;
    top: 10px;
    top: 1.316vw;
    bottom: 10px;
    bottom: 1.316vw;
    left: 18px;
    left: 2.368vw;
    z-index: 1;
    width: 110px;
    width: 14.474vw;
    padding: 11px 0;
    padding: 1.447vw 0;
    font-weight: 700;
    font-size: 22px;
    font-size: 2.895vw;
    line-height: 1.1363;
    color: #333;
    background-color: #ffcd00;
    text-align: center;
    letter-spacing: -0.5px;
    /* letter-spacing: -0.658vw; */
}
.group_caution .list_caution dd {
    padding: 19px 11px 17px 148px;
    padding: 2.5vw 1.447vw 2.237vw 19.474vw;
}
.group_caution .list_caution .item_l {
    margin-top: 5px;
    margin-top: 0.658vw;
    text-align: left;
}
.group_caution .list_caution .item_l:first-child {
    margin-top: 0;
}
.group_caution .list_caution .list_l [class^="ico_num"] {
    float: left;
    margin-top: 3px;
    margin-top: 0.395vw;
}
.group_caution .list_caution .list_l .txt_comm {
    overflow: hidden;
    display: block;
    padding-left: 10px;
    padding-left: 1.316vw;
    font-size: 18px;
    font-size: 2.368vw;
    line-height: 1.2777;
    color: #222;
    letter-spacing: -0.75px;
    letter-spacing: -0.099vw;
}

/* group_forms
---------- ---------- ---------- ---------- ---------- */
.group_forms {
    margin-top: 6.4473%;
    padding: 0 5.2631%;
}
.group_forms .list_forms {
    padding-bottom: 47px;
    padding-bottom: 6.184vw;
    border-radius: 20px;
    border-radius: 2.632vw;
    font-size: 0;
    background-color: #fff;
}
.group_forms .list_forms .item_forms {
    position: relative;
    border-top: 1px solid #ccc;
    box-sizing: border-box;
    vertical-align: top;
    text-align: left;
}
.group_forms .list_forms .item_forms:first-child {
    border-top: 0 none;
}
.group_forms .list_forms .item_forms:first-child > .outer_cell {
    min-height: 186px;
    min-height: 24.474vw;
}
.group_forms .list_forms .item_forms > .outer_cell {
    min-height: 104px;
    min-height: 13.684vw;
    padding-left: 147px;
    padding-left: 19.342vw;
}
.group_forms .list_forms .emph_forms {
    position: absolute;
    top: 30px;
    top: 3.947vw;
    left: 0;
    z-index: 1;
    width: 127px;
    width: 16.711vw;
    border-radius: 0 20px 20px 0;
    border-radius: 0 2.632vw 2.632vw 0;
    box-sizing: border-box;
    font-weight: 800;
    font-size: 28px;
    font-size: 3.684vw;
    color: #fff;
    background-color: #9a55f3;
    text-transform: uppercase;
    text-align: center;
}
.group_forms .list_forms .tit_forms {
    display: inline-block;
    font-size: 0;
    vertical-align: middle;
    text-align: left;
}
.group_forms .list_forms .tit_forms .txt_l {
    display: inline-block;
    font-weight: 700;
    font-size: 30px;
    font-size: 3.947vw;
    color: #222;
    letter-spacing: -1.25px;
    letter-spacing: -0.164vw;
    vertical-align: middle;
}
.group_forms .list_forms .tit_forms .txt_l + small.txt_l {
    padding-left: 18px;
    padding-left: 2.368vw;
}
.group_forms .list_forms .tit_forms small.txt_l {
    font-weight: 500;
    font-size: 18px;
    font-size: 2.368vw;
    padding-left: 2.368vw;
    color: #222;
    letter-spacing: -0.75px;
    letter-spacing: -0.099vw;
}
.group_forms .list_forms .fst .conts_forms {
    display: inline-block;
    margin-top: 27px;
    margin-top: 3.553vw;
    padding: 0;
    vertical-align: middle;
}
.group_forms .list_forms .conts_forms {
    display: block;
    padding: 0 0 29px;
    padding: 0 0 3.816vw;
    text-align: left;
}
.group_forms .list_forms .list_l {
    margin-left: -24px;
    margin-left: -3.158vw;
    font-size: 0;
}
.group_forms .list_forms .item_l {
    display: inline-block;
    margin-left: 20px;
    margin-left: 2.632vw;
    vertical-align: top;
}
.group_forms .box_inp {
    display: inline-block;
    position: relative;
    margin-left: 10px;
    margin-left: 1.316vw;
    padding: 6px 0;
    padding: 0.789vw 0;
    border-radius: 13px;
    border-radius: 1.711vw;
    background-color: #ffba00;
}
.group_forms .box_inp:first-child {
    margin-left: 0;
}
.group_forms .box_inp .inp_comm {
    position: absolute;
    top: 0;
    left: 0;
    width: 16px;
    width: 2.105vw;
    height: 16px;
    height: 2.105vw;
    opacity: 0;
}
.group_forms .box_inp .lab_radio {
    display: block;
    position: relative;
    top: 0;
    padding: 0 20px;
    padding: 0 2.632vw;
    cursor: pointer;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}
.group_forms .box_inp .lab_radio .txt_comm {
    display: inline-block;
    font-weight: 700;
    font-size: 28px;
    font-size: 3.684vw;
    color: #222;
    vertical-align: middle;
    letter-spacing: -1.05px;
    letter-spacing: -0.138vw;
}
.group_forms .box_inp .ico_comm {
    display: inline-block;
    width: 19px;
    width: 2.5vw;
    height: 19px;
    height: 2.5vw;
    background-image: url("https://s3.unistudy.co.kr/images/mobile/event/2025/joinEvent_2509/ico_radio.png");
    background-position: 0 0;
    background-repeat: no-repeat;
    background-size: auto 100%;
    vertical-align: middle;
}
.group_forms .box_inp .lab_radio .ico_comm + .txt_comm {
    padding-left: 14px;
    padding-left: 1.842vw;
}
.group_forms .box_inp .inp_comm:checked + .lab_radio {
    color: #fff;
}
.group_forms .box_inp .inp_comm:checked + .lab_radio .ico_comm {
    border-radius: 100%;
    background-position: 100% 0;
    /* outline: 1px dotted #000;
    outline: -webkit-focus-ring-color auto 5px; */
}

/* group_thumb
---------- ---------- ---------- ---------- ---------- */
.group_thumb {
    position: relative;
    width: 418px;
    width: 55vw;
    height: 438px;
    height: 57.632vw;
    margin: 0 auto;
    text-align: center;
}
.group_thumb::before {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 1;
    border: 2px solid #f1f1f1;
    content: "";
}
.group_thumb .outer_cell {
    height: 100%;
}
.group_thumb .upload-thumb {
    position: absolute;
    top: 50%;
    left: 50%;
    z-index: 1;
    width: auto;
    max-width: 100%;
    height: auto;
    max-height: 100%;
    transform: translate(-50%, -50%);
}
.group_thumb .upload-thumb-wrap .upload-thumb {
    width: 100%;
    height: 100%;
}

/* filebox
---------- ---------- ---------- ---------- ---------- */
.filebox {
    width: 418px;
    width: 55vw;
    margin: 33px auto 0;
    margin-top: 4.342vw;
}
.filebox input[type="file"] {
    overflow: hidden;
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    border: 0 none;
    clip: rect(0, 0, 0, 0);
}
.filebox label {
    display: block;
    height: 64px;
    height: 8.421vw;
    padding: 18px 0;
    padding: 2.368vw 0;
    border-radius: 13px;
    border-radius: 1.711vw;
    box-sizing: border-box;
    font-weight: 700;
    font-size: 28px;
    font-size: 3.684vw;
    line-height: 1;
    color: #fff;
    background-color: #ff9600;
    text-align: center;
    cursor: pointer;
}
/* .filebox label:focus {
  outline: 1px dotted #000;
  outline: -webkit-focus-ring-color auto 5px;
} */
.filebox .upload-name {
    overflow: hidden;
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    border: 0 none;
    clip: rect(0, 0, 0, 0);
}
.filebox .upload-display {
    margin-bottom: 5px;
}
.filebox .upload-thumb-wrap {
    display: inline-block;
    width: 54px;
    width: 7.105vw;
    padding: 2px;
    padding: 0.263vw;
    vertical-align: middle;
    border: 1px solid #ddd;
    border-radius: 5px;
    border-radius: 0.658vw;
    background-color: #fff;
}
.filebox .upload-display img {
    display: block;
    max-width: 100%;
    width: 100%;
    height: auto;
}

/* group_textarea
---------- ---------- ---------- ---------- ---------- */
.group_textarea .box_textarea {
    margin: 0 18px;
    margin: 0 2.368vw;
}
.group_textarea .box_textarea textarea.tf_comm {
    display: block;
    height: 126px;
    height: 16.579vw;
    padding: 18px;
    padding: 2.368vw;
    border: 0 none;
    border-radius: 0;
    box-sizing: border-box;
    font-size: 20px;
    font-size: 2.632vw;
    color: #222;
    background-color: #f1f1f1;
    letter-spacing: -0.75px;
    letter-spacing: -0.099vw;
    resize: none;
}
.group_textarea .box_textarea textarea.tf_comm::-webkit-input-placeholder {
    font-weight: 500;
    font-size: 20px;
    font-size: 2.632vw;
    color: #8f8f8f;
}
.group_textarea .box_textarea textarea.tf_comm::-moz-placeholder {
    font-weight: 500;
    font-size: 20px;
    font-size: 2.632vw;
    color: #8f8f8f;
}
.group_textarea .box_textarea textarea.tf_comm:-ms-input-placeholder {
    font-weight: 500;
    font-size: 20px;
    font-size: 2.632vw;
    color: #8f8f8f;
}
.group_textarea .box_textarea textarea.tf_comm:-moz-placeholder {
    font-weight: 500;
    font-size: 20px;
    font-size: 2.632vw;
    color: #8f8f8f;
}
.group_textarea .emph_comm {
    display: block;
    margin: 10px 17px 0 0;
    margin: 1.316vw 2.237vw 0 0;
    font-weight: 500;
    font-size: 18px;
    font-size: 2.368vw;
    color: #222;
    text-align: right;
    letter-spacing: -0.75px;
    letter-spacing: -0.099vw;
}

/* area_evt */
.cont3Bg {
    padding: 97px 0 0;
    padding: 12.763vw 0 0;
    padding: 12.7631% 0 0;
    background-color: #812cf3;
}
.cont3Bg .inner_evt {
    position: relative;
}
.cont3Bg .tit_evt3 {
    width: 75.6578%;
    margin: 0 auto;
}
.cont3Bg .img_evt3 {
    width: 93.0263%;
    margin-top: 57px;
    margin-top: 7.5%;
    margin-left: 53px;
    margin-left: 6.9736%;
}
.cont3Bg .txt_comm {
    position: absolute;
    top: 880px;
    /* top: ?%; */
    top: 115.789vw;
    right: 0;
    left: 0;
    z-index: 1;
    font-weight: 500;
    font-size: 24px;
    font-size: 3.158vw;
    color: #fff;
    letter-spacing: -1.45px;
    letter-spacing: -0.191vw;
    text-align: center;
}
.cont3Bg__btnArea {
    width: 410px;
    width: 53.9473%;
    margin: 20px auto;
}
/* .cont3Bg__btnArea .inputArea__click:focus-visible {
  outline: 1px dotted #000;
  outline: 1px auto -webkit-focus-ring-color;
} */

/* area_evt */
/* noticeWrap : 유의사항 */
.noticeWrap {
    width: auto;
    margin-top: 57px;
    margin-top: 7.5%;
    padding: 0 5.263vw 7.895vw;
}
.noticeWrap__title {
    display: block;
    margin: 0 auto;
    padding: 0.8rem 0 0.7rem;
    background: rgba(0, 0, 0, 0.3);
    font-size: 4.2vw;
    font-weight: normal;
    text-align: center;
    cursor: pointer;
}
.noticeWrap__title--sub {
    margin-bottom: 0.5rem;
    padding: 0;
    background: none;
    font-weight: bold;
    font-size: 3.6vw;
    color: #3f3f3f;
    text-align: left;
}
.noticeWrap__list + .noticeWrap__title {
    margin-top: 5vw;
}
.noticeWrap__txt {
    display: inline-block;
    position: relative;
    padding: 0 1rem 0 0;
    font-weight: bold;
    color: #fff;
}
.noticeWrap__txt:before {
    position: absolute;
    right: -2vw;
    top: 50%;
    z-index: 3;
    font-size: calc(100% - 1vw);
    content: "▼";
    transform: translateY(-50%);
}
.noticeWrap.on .noticeWrap__txt:before {
    content: "▲";
}
.noticeWrap__inner {
    display: none;
    margin: 0;
    padding: 1rem;
    background: #fff;
}
.noticeWrap__list {
    position: relative;
}
.noticeWrap__item {
    position: relative;
    padding: 0 0 0 0.7rem;
    margin-bottom: 0.2rem;
    font-size: 3.2vw;
    line-height: 1.4;
    letter-spacing: -0.5px;
    color: #3f3f3f;
    word-break: keep-all;
    word-wrap: break-word;
}
.noticeWrap__item--impact {
    color: #812cf3;
}
.noticeWrap__item > b {
    color: #812cf3;
}
.noticeWrap__item:before {
    position: absolute;
    left: 0;
    top: 0;
    z-index: 3;
    content: "-";
}
.noticeWrap__link {
    display: inline-block;
    font-weight: bold;
    font-size: inherit;
    color: #812cf3 !important;
    text-decoration: underline !important;
}
.noticeWrap__link > span {
    font-family: Dotum;
}

/* winner-popup-overlay */
.winner-popup-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    visibility: hidden;
    opacity: 0;
    transition: visibility 0s 0.5s, opacity 0.5s ease-out;
}
.winner-popup-overlay.active {
    visibility: visible;
    opacity: 1;
    transition: visibility 0s, opacity 0.5s ease-out;
}
.winner-popup-mszie {
    width: 100%;
    max-width: 375px;
    margin: 0 auto;
}
.winner-popup-content {
    min-width: 80%;
    max-width: 90%;
    margin: 0 auto;
    padding: 2rem 0 0;
    background: #fff;
    border-radius: 25px;
    text-align: center;
    transform: scale(0.8);
    transition: transform 0.3s ease-out;
}
.winner-popup-overlay.active .winner-popup-content {
    transform: scale(1);
}
.winner-popup-content h2 {
    padding: 0 0 2rem;
    border-bottom: 1px dashed #598bf4;
}
.winner-popup-content h2 > img {
    width: 64%;
    margin: 0 auto;
}
.winner-popup-content .winning-prize h3 {
    margin: 1.5rem 0;
    font-weight: bold;
    font-size: 15px;
    letter-spacing: -0.5px;
    color: #333;
    text-align: center;
}
.winner-popup-content .item-img {
    display: flex;
    margin: 0 0 2rem;
    align-items: center;
    justify-content: center;
}
.winner-popup-content .item-img > img {
    display: block;
    width: auto;
    height: auto;
    max-width: 150px;
    max-height: 150px;
}
.close-popup-button {
    display: block;
    width: 100%;
    padding: 1.5rem 0;
    background: #307ef9;
    border-radius: 0 0 25px 25px;
    font-weight: bold;
    font-size: 15px;
    color: #fff;
    text-align: center;
    cursor: pointer;
}
@media screen and (orientation: landscape) {
    .winner-popup-overlay {
        position: absolute;
    }
}

.screen_out {
    overflow: hidden;
    position: absolute;
    width: 0;
    height: 0;
    line-height: 0;
    text-indent: -9999px;
}
.ir_pm {
    display: block;
    overflow: hidden;
    font-size: 1px;
    line-height: 0;
    color: transparent;
}

.event_section {
    position: relative;
    margin-top: 9.0789%;
    padding: 0 14.2105%;
}
.event_section ul {
    margin: -36px 0 0 -36px;
    margin: -4.737vw 0 0 -4.737vw;
    font-size: 0;
}
.event_section li {
    display: inline-block;
    width: 50%;
    padding: 36px 0 0 36px;
    padding: 4.737vw 0 0 4.737vw;
    box-sizing: border-box;
    vertical-align: top;
    perspective: 1000px;
}
.event_section .card {
    position: relative;
    padding-top: 149.6062%;
}
.event_section .card .inner_card {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 1;
    transform-style: preserve-3d;
    transition: transform 0.6s ease-in-out;
}
.event_section .front {
    background-image: url(https://s3.unistudy.co.kr/images/mobile/event/2025/joinEvent_2509/card_back.png);
    background-position: 50% 50%;
    background-repeat: no-repeat;
    background-size: cover;
}
.event_section .event_btn {
    position: relative;
}
.event_section .front,
.event_section .back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
}
.event_section .back {
    transform: rotateY(180deg);
    background-image: url(https://s3.unistudy.co.kr/images/pc/event/2025/joinEvent_2505/card_default.png);
    background-position: 50% 50%;
    background-repeat: no-repeat;
    background-size: cover;
}
.event_section .img_box.flip .card .inner_card {
    transform: rotateY(180deg);
}

/* ========== ========== ========== ========== ==========
////////// ////////// Cell ////////// //////////
========== ========== ========== ========== ========== */
.outer_cell {
    display: table;
    width: 100%;
    box-sizing: border-box;
}

.inner_cell {
    display: table-cell;
    box-sizing: border-box;
    vertical-align: middle;
}
/* // 2025-08-22 수정 끝 */